Data Center Audit (DCA) is a low cost Web-based configuration management (CMDB) software application for IT data center asset management and inventory control. It is targeted for small to medium size data centers looking for a simple, non-intrusive method of management of their data center. It offers the ability to view granular details of all IT data center elements as well as the ability to view host-to-switch-to-storage mappings, reserve (check out) elements, a visual layout view of your data center, audit logging, and the ability to export views to CSV.
udpfwd is a stateful userspace UDP port forwarder that can accomplish SNAT/DNAT. It listens for packets received on a given port, changes their source IP addresses to the address of the local host ("SNAT"), and forwards them to the destination (dest_ip:dest_port) from a randomly chosen local sending port. Once chosen, the source_ip:source_port:send_port triplet is unique, allowing for connection tracking. Conversely, when a packet is received on send_port, its destination is changed to source_ip:source_port ("DNAT"), and forwarded onwards.
IP Flood Detector is a derivative of an earlier project, DNS Flood Detector. It provides managers with an audit trail of TCP, UDP, and ICMP packet floods directed at Internet-facing servers. When packet rates exceed a specified threshold, IP Flood Detector will syslog the offending IP address, along with the associated protocol and traffic volume.
Yet Another Flowmeter (YAF) is a tool for network flow capture, primarily designed to operate efficiently on white box hardware and generate IPFIX flow records. It is designed to operate primarily on Unix-based systems (including Mac OS X), and is supported by the Network Situational Awareness team at CERT.